RIO HONDO BLE FINDINGS MEETING July 26 & 27, 2017
WHAT IS RISK MAP? Mapping – Identification of areas of natural hazard risk Assessment – Review and analysis of hazard areas Planning – Mitigation activities to reduce risk
WHAT IS BASE LEVEL ENGINEERING Cursory engineering analysis to provide predicted areas of flood risk. Measuring stick to allow FEMA to assess its current flood maps. Flood risk data that provides a platform for broader risk communications. Engineering modeling that may be used and leveraged by local communities to review effect of development in and around the floodplain.
WHAT IS BASE LEVEL ENGINEERING Minimum Data Purchase • Hydraulic Modeling (10%, 4%, 2%, 1%, 1%+, 1%-, and 0.2%) • 10%, 1% and 0.2% Floodplains • 1% and 0.2% Water Surface Grids • 1% and 0.2% Flood Depth Grids • Hazus prepared with Depth Grids
BASE LEVEL ENGINEERING IS A MINDSET Base Level Engineering results are available through the Estimated BFE Viewer.
Detailed w/ Floodway MINDSET Detailed Study Limited Detail Study Base Level Engineering Scalable models allow communities to maintain the inventory.
FLOOD RISK PRODUCTS & DATASETS Raster Datasets Flood Risk Floodplains 1% and 0.2% Water Assessment Surface Elevation Grids 10%, 1% and 0.2% Hazus Assessment 1% and 0.2% Estimated Floodplains Flood Depth Grids What is the What is the expected vulnerability or What is the variability flood extent during economic loss of flood risk within the these storm potential within the floodplain? frequencies? watershed?
PROVIDING BASE FLOOD ELEVATIONS This information can be adopted by locals without any FIRM The BLE results may be used in areas where no flood hazard information is shown on your FIRM Where BLE is similar OR more conservative it may be used to provide Estimated Base Flood Elevations to residents Where BLE is smaller than current FIRM , BLE should NOT be used to provide Estimated Base Flood Elevations Data may be used for local planning purposes Local community letter of adoption of Estimated BFE is needed to submit with LOMAs.
ESTIMATED BFE VIEWER
ESTIMATED BFEVIEWER http://apps.femadata.com/estbfe
ESTIMATED BFEVIEWER http://apps.femadata.com/estbfe
ESTIMATED BFEVIEWER http://apps.femadata.com/estbfe
ESTIMATED BFE VIEWER http://apps.femadata.com/estbfe
ESTIMATED BFEVIEWER
ESTIMATED BFE VIEWER K:/R06/OK/POTTAWATOMIE/16-06-597S /Hydraulics/2186721/SaltCreek http://apps.femadata.com/estbfe
RIO HONDO LIDAR PRODUCTS
LIDAR DERIVED PRODUCTS
RIO HONDO LIDAR PRODUCTS
SINKHOLE MAPPING
PLAYA MAPPING A similar technique was used to map playas – here color-ramped by depth.
REGION VI BLEVISION
BASE LEVEL ENGINEERING UNLOCKING THE POWER OF THE BLE DATASETS Public outreach and communication Updating the local mitigation plan Taking mitigation action Community planning Response and recovery ▸ The REAL power comes from combining with local data – parcels, buildings, and critical facilities!
BLE & LIDAR PRODUCTS COMBINED BFE Viewer for Approximate A zones Footprints + Assessor data GIS/ Target Mitigation actions to reduce wildfire risk Lidar BLE Identify high risk areas for detail studies Local Critical facilities & local institutions Info Building footprints Building footprints Reducing Risk
NM RGIS Lidar & Products Download from RGIS Data Portal Animas and Rio Hondo Digital Elevation Model (DEM) Animas and Rio Hondo Hillshade Provide a hard drive and we’ll copy the data Lidar Point Clouds .las files Lidar is a huge, huge data set Rio Hondo 2.56 TB Curry/Roosevelt 1.98 TB Animas 716 GB Santa Fe County 2.68 TB http://rgis.unm.edu/
NM RGIS RISK MAP PRODUCTS Rio Hondo Elevation Products DEM Shaded Relief FEMA Risk Slope & Aspect Map Defensible Space Overall Perimeter – WUI & Defensible Space Building Footprints Impervious Surface Reduced Fuel Zone Sinkholes
COMMUNITY INTERACTIVE MAPS
QUESTIONS Shawn L. Penman, PhD, CFM, GISP spenman@edac.unm.edu (505) 277-3622 ext 227
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